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Added 2 months ago
S&
Senior Substation Electrical Engineer 1 - Grid
Sargent & Lundy
Calgary, AB
- Full-time
…of high voltage substation projects. As a Senior Substation Engineer, you…
Added 3 months ago
C
Senior Software Engineer, Core Reliability
Coinbase
Canada
- Full-time
As a Senior Software Engineer, Core Reliability on the Infra Reliability team within Platform, you'll help Coinbase scale 50x by improving reliability, security, and deployment safety…
Added 3 months ago
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Senior Software Engineer, Data Engineering
NationGraph
Toronto, ON
- $150,000 to $200,000 CAD / year
- Full-time
NationGraph is making public sector data accessible and actionable for businesses selling to cities, counties, state agencies, schools, and special districts. NationGraph's data and…
Added 3 months ago
T
Principal, Sales AI Strategy & Execution
Tipalti
Vancouver, BC
- $135,000 to $165,000 CAD / year
- Full-time
You are equally at home talking to an AE about why a workflow isn’t hitting right and talking to a data engineer about API schema design. You surface what the field needs, translate it into…
Added 3 months ago
CG
Staff Software Engineer, Financial Platform
Credit Genie
Toronto, ON
- Full-time
As the Staff Engineer on this team, you will set the technical direction for our money movement platform and raise the engineering bar for the team around you. You will own the hardest…
Added 3 months ago
CG
Senior Software Engineer, Trust Platform
Credit Genie
Toronto, ON
- Full-time
As a Senior Backend Engineer on the Trust Platform team, you'll play a pivotal role in shaping the systems that safeguard and personalize our financial products. You'll design and build the…
Added 3 months ago
S
Full Stack Engineer
Structurely
Canada
- Full-time
We need a senior backend engineer with high agency to own and evolve our backend services. You’ll build reliable, scalable systems that support real-time, high-throughput workloads…
Added 3 months ago
SS
AI Performance Engineer – GPU & ROCm
Sapphire Stream Technology
Toronto, ON
- Full-time
We are looking for a GPU AI Performance Engineer to optimize and deploy AI and machine-learning workloads using ROCm.
Added 3 months ago
PI
Data Platform Engineer
Princeton IT Services, Inc
Toronto, ON
- Full-time
The primary focus of this role will be to design, build, and maintain the EMFI Data Application Platform, a financial analytics application. The incumbent will work across the full stack to…
Added 3 months ago
BG
Project Consultant (Renewable Energy)
BTY Group
Vancouver, BC
- $65,000 to $85,000 CAD / year
- Full-time
…provides Technical Due Diligence, Construction Management, Owner’s Engineer, Insurance and Offtake advisory services across wind, solar, and energy storage projects worldwide. We compete…
Added 3 months ago
E
Senior Software Engineer
Emburse
Toronto, ON
- Full-time
…engaging and interconnected set of system solutions. As an engineer, you will enhance the experiences of your customers, solve interesting challenges, and design new solutions. Emburse,…
Added 3 months ago
ES
Machine Learning Engineer - Express Scripts Canada
Express Scripts Pharmacy Benefit Services
Mississauga, ON
- Full-time
Express Scripts Canada is looking for a Machine Learning Engineer to join our Team. The successful candidate will design, build, and operate data pipelines and ML services that detect…
Added 2 months ago
D
Chief Software Engineering Architect
DataStealth
Mississauga, ON
- Full-time
DataStealth is a single, unified data security platform (DSP) that discovers, classifies, and protects sensitive data across your entire environment, from on-premise to legacy cloud to…
Added 2 months ago
D
Senior DevOps Engineer
DataStealth
Mississauga, ON
- Full-time
DataStealth is a single, unified AI data security platform (DSP) that discovers, classifies, and protects sensitive data across your entire environment - from on-premise to legacy systems…
Added 2 months ago
S&
Lead Substation Engineer 1 - Grid
Sargent & Lundy
Calgary, AB
- Full-time
This position will offer you the ability to directly apply your knowledge of protective relaying and controls systems for HV and EHV substations. As a Lead Substtion Engineer, you will:
Added 2 months ago
S&
Substation Engineering Consultant 2 - Grid
Sargent & Lundy
Calgary, AB
- Full-time
…new and existing high voltage substations. As a Substation Engineer Consultant, you…
Added 2 months ago
S1
Full-Stack Machine Learning Engineer
Signal 1
Toronto, ON
- Full-time
…that can ensure solutions are performing as expected and make data-driven decisions on where to invest. Purpose-built for healthcare and informed by experience managing AI at scale, Signal…
Added 2 months ago
CO
Staff Software Engineer
Capital One
Toronto, ON
- Full-time
161 Bay Street (93021), Canada, Toronto,Toronto, Ontario,Staff Software Engineer
Added 2 months ago
WI
Mechanical Engineering Lead
Work in Ottawa
Ottawa, ON
- $125,000 to $135,000 CAD / year
- Full-time
The Mechanical Engineer Lead is responsible for leading mechanical engineering scope on assigned projects from concept through design, procurement, fabrication support, installation and…
Added 2 months ago
M
Senior Software Engineer - Brokerage Platform
moomoo
Remote, Canada
- Full-time
- Remote
We are looking for an experienced Senior Software Engineer to join our engineering team in Toronto.
Added 2 months ago
Director, Developer Platform & Experience
Motive
Vancouver, BC
Most AI coding adoption stops at the laptop - one engineer, one agent, one local checkout. That ceiling is low, and moving past it is the signature technical challenge of this role.
Added 2 months ago
M
Principal Software Engineer
Mastercard
Toronto, ON · Vancouver, BC
- Full-time
The Principal Engineer shapes technical architecture, solution patterns, and engineering approaches for strategic initiatives within Mastercard’s Security Solutions Organization (SSO).…
Added 2 months ago
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Développeur logiciel en support à la recherche sur les menaces / Threat Research Software Engineer (m/f/n)
ESET
Montreal, QC
- Full-time
Added 2 months ago
EG
Systems Engineer – Industrial Control and Communications Systems
Egis Group
Toronto, ON
- $120,000 to $150,000 CAD / year
- Full-time
Systems Engineer – Industrial Control and Communications Systems based in Toronto, Ontario, Canada. The role is responsible for the design, integration, commissioning, operation, and…
Added 2 months ago
H
Construction Contract Administrator - Field Operations
HDR
Calgary, AB
- Full-time
…where people work, connect, and thrive. From high-performance data centers driving the future of AI to dynamic commercial environments, your work will directly support technological…

Signal 1

Full-Stack Machine Learning Engineer

Toronto, ON, M5R 2E3, Canada

Full-time

Apply About employer

Applications open in a new tab.

Job details

Job type: Full-time
Experience: 3+ years of industry experience shipping software, with a substantial portion of that time spent on applied machine learning
Posting language: English
Posted: Aug 13, 2026

Original job description

About Signal 1

US health systems will spend $100-130 billion on AI between 2025 and 2030, and studies show that 95% of AI initiatives fail to deliver measurable impact. Health systems have little to no insight into which AI solutions actually work and bring value, meaning that millions of dollars are wasted on tools that make no difference.

Signal 1's AI Management System enables health systems to operate scalable and valuable AI programs that can ensure solutions are performing as expected and make data-driven decisions on where to invest. Purpose-built for healthcare and informed by experience managing AI at scale, Signal 1 empowers health systems to use AI to its full potential and maximize impact on patient care. We were founded by Tomi Poutanen (former Chief AI Officer at TD Bank, co-founder of the Vector Institute and Radical Ventures) and Mara Lederman (previously a professor at University of Toronto's Rotman School of Management and lead at Creative Destruction Lab), with early backing from Geoffrey Hinton.

About the role

Health systems are starting to build their own AI agents: agents that draft discharge summaries, reconcile medications, prepare prior authorization reviews, and schedule patients. Every one of those agents acts on real patient data inside real clinical workflows, and every one of them needs to be visible, evaluated, and defensible from the day it goes live.

The Agent Control Plane is the latest extension of our flagship product, the Signal 1 AI Management System (AIMS). It gives a hospital one place to manage, evaluate, continuously improve, govern, and interact with all of its agents. The work behind that spans grounding agents in the organization's own context, evaluating agent behavior in a dynamic clinical environment, extracting actionable insights that enable continuous improvement, and integrating with a hospital's systems and people to enable effective agentic workflows.

This part of the platform is a true zero-to-one build that we are co-developing with leading US health systems including NewYork-Presbyterian and Mount Sinai. We have a clear thesis and a small team with room for you to own large pieces of the product. You will work directly with the Director of Engineering, and the technical decisions you make will shape the architecture, the codebase, and the product for years.

This role suits someone who has already taken ML-powered products from first commit to production users and wants to do it again with far more ownership.

About the team

You'll work with a team of engineers, machine learning scientists, and product people who are ambitious and passionate about their craft. We work hard and move fast to shape the way healthcare uses AI for the better. Our office is based in Toronto and we come together 1-2 days a week to collaborate, innovate, and have fun.

What you'll do

Own features end to end: Take a problem from ambiguous idea to production. You'll design the data model, build the pipelines and backend services, and work across the frontend when your feature calls for it. You own the whole slice and the outcome it delivers.

Build the AI core of the product: Design and implement the systems that ground agents in a hospital's own context, evaluate their behavior in a dynamic environment, and turn agent activity into actionable insights that drive continuous improvement.

Work with messy, real-world data: Ingest and normalize agent telemetry from many runtimes, healthcare data standards like FHIR, and clinician feedback, then turn it all into datasets the product and its evaluations can rely on.

Prototype with design partners: Build demos and pilots alongside real health systems, watch them get used, and fold what you learn back into the product within days.

Invent where there is no playbook: Agent observability and evaluation in healthcare is a brand-new field. Many of the problems you'll face have no established solution, and you'll be expected to create one, test it against real data, and share what you learned.

Raise the bar: Agent management is a nascent practice that is developing and changing quickly. You'll keep our patterns for testing, evaluation, logging, and reliability ahead of a fast-moving state of the art, and the standards you set will spread through the whole team.

You'll be a great fit if you have...

Experience

3+ years of industry experience shipping software, with a substantial portion of that time spent on applied machine learning

A track record of building production AI systems: you have taken LLM-powered or ML-powered features into production, operated them at scale, and been on the hook when they misbehaved

Depth in AI and backend engineering: strong Python for services and ML pipelines, working fluency with cloud infrastructure and CI/CD, and a working understanding of frontend development (TypeScript, React, or equivalent) with enough hands-on experience to work across the stack when a feature needs it

Deep hands-on data experience: you have built data pipelines, cleaned messy datasets, designed schemas, and understand how data quality issues surface downstream in models and metrics

Zero-to-one shipping: you have taken at least one product or major product area from an empty repo to real users

A history of novel solutions: you can point to problems that had no established approach and describe the solution you created, why it worked, and how you validated it

Ways of working

A strong product mindset: you start from who the user is and what outcome they need, and you let that drive every technical decision

Comfort navigating uncharted waters: you make good decisions with incomplete information, timebox your bets, and course-correct quickly when the evidence points somewhere new

High agency and resourcefulness: you find the information you need, unblock yourself, and pull in help early when a decision is bigger than you

Clear, succinct communication: you keep engineering, product, and customers on the same page as things move fast, and you translate fluently between technical and clinical audiences

An AI-native way of working: you use AI tools daily across coding, research, and prototyping to speed up every step, and you hold the output to a high standard

A high bar for craft: you push beyond "does it work?" to "does it feel right?", in the product and in the codebase

Nice to have

Experience with healthcare data (FHIR, HL7, EHR integrations) or other regulated, privacy-sensitive domains

Ownership of a product that shipped to production, with responsibility for iterating on it release after release toward product-market fit

Experience building agentic systems that operate on large-scale data in production

Experience conducting AI research, with peer-reviewed publications at conferences or in journals

What we'll bring

Competitive compensation (base salary + bonus + equity) in a high-growth company

Comprehensive health benefits

4 weeks PTO

A green-field product, direct access to design partners at major health systems, and a real say in what gets built

To apply

To apply for this role, please send an email to jullian@signal1.ai with:

"Re: Signal 1 Full-stack Machine Learning Engineer" as the subject line

Your resume

A walkthrough of an ML or AI system you took to production: what it does, the hardest technical decision you made along the way, and why you chose to share this one. Write it as plain text in the body of the email, 500 characters maximum. You may attach one image to supplement the walkthrough.

Apply About employer

More about this job

Responsibilities

You will own the end-to-end development of features, from design and data modeling to backend implementation and frontend integration. Additionally, you will build the AI core of the product by grounding agents in clinical context and creating systems for evaluation and continuous improvement.

Requirements

The role requires 3+ years of industry experience with a strong focus on applied machine learning and shipping production-grade AI systems. Candidates must possess deep expertise in Python, backend engineering, data pipeline construction, and the ability to work across the stack.

Skills

Machine Learning
Python
LLM
Backend Engineering
Cloud Infrastructure
CI/CD
TypeScript
React
Data Pipelines
Data Modeling
FHIR
Healthcare Data
Agentic Systems
Software Development
System Architecture

Benefits

Competitive compensation
Bonus
Equity
Comprehensive health benefits
4 weeks PTO

Visa sponsorship

Not detected in the job text

Hiring contact

Jullian

Hiring contact email

jullian@signal1.ai

Keywords

Full-Stack
Machine Learning
AI Management System
Agent Control Plane
Healthcare
Python
LLM
Backend
Cloud Infrastructure
CI/CD
TypeScript
React
Data Pipelines
FHIR
HL7
EHR
Data Modeling
Agentic Systems
Software Engineering
Product Development
System Architecture
Telemetry
Clinical Workflows
Data Quality
Prototyping
Scalability
Governance
Observability
Evaluation
Reliability

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